package com.twq.gaoji;

/**
 * @author twq
 * @date 2021/8/23 10:31
 */
//测试生产者消费者问题2：信号灯法,标志位解决
public class TestPC2 {

    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Wather(tv).start();
    }
}

//生产者---->演员
class Player extends Thread{
    TV tv;
    public Player(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        super.run();
        for (int i = 0; i < 20; i++) {
            if (i%2==0){
                this.tv.play("快乐大本营播放中");
            }else{
                this.tv.play("抖音：记录美好生活");
            }
        }
    }
}

//消费者————>观众
class Wather extends Thread{
    TV tv;
    public Wather(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        super.run();
        for (int i = 0; i < 20; i++) {
            tv.watch();
        }
    }
}

//产品---->节目
class TV{
    //演员表演，观众等待T
    //观众观看，演员等待F
    String voice; //表演的节目
    boolean flag = true;

    //表演
    public synchronized void play(String voice){

        if(!flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("演员表演了："+voice);
        //通知观众观看
        this.notifyAll();  //通知唤醒
        this.voice=voice;
        this.flag=!this.flag;
    }
    //观看
    public synchronized void watch(){
        if(flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观看了："+voice);
        //通知演员表演
        this.notifyAll();
        this.flag = !this.flag;
    }
}



